Milling cutter insert



FIG. 1 is a side view of the milling cutter insert;

FIG. 2 is a top perspective view thereof; and,

FIG. 3 is a top plan view thereof.

The other sides are not shown as they are identical to the illustrated side and the bottom is not shown as it is identical with the top. 

The ornamental design for a milling cutter insert, as shown and described. 